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Does a 38 Pilot Jet sound too lean ?
Posted: 10:33 pm Dec 14 2011
by ihatefalling
I hate to admit it but, I have never completely gone through the jetting exercise.
Finally did ! Man what a difference. My bike is running tight ! And FAST.
It had a 42 PJ in it. When I adjusted the air screw, it seemed like I had to get it about 5 turns out to get to the top of the idle. The air screw was about to fall out !
I dropped it to a 38 and I'm pretty sure it's running best at about 1.5 turns out.
I've read a bunch of jetting posts here and it didn't seem like a lot of ya'll are running 38 PJs. So I'm wondering.
220 with RB carb and head......thx
Posted: 11:53 pm Dec 14 2011
by Slick_Nick
I run a 38. Mind you my city is at 3500' already and it only gets higher where I ride
Posted: 12:02 am Dec 15 2011
by SS109
Heh, I have a 38 in the 250!
Posted: 08:49 am Dec 15 2011
by kdx633
I too run a 38 in my 220 with the RB mods,woods pipe,and v-force reeds.I normally ride 750' to 2000' asl.Thinking i was doing something incorrectly I messed around with needles and mains only to come back to the 38.Using ethanol free fuel helped clear up some confusion as well as make the results repeatable.
Posted: 10:14 am Dec 15 2011
by KarlP
I used a 38 pilot in my 220, RB carb and head, 607 reeds.
I think I've also used a 40.
Sea level, real hot down here most of the time.
Posted: 01:01 pm Dec 15 2011
by jbowens2401
i think ron sends the carb back with the 38 as an optional pj for our area. i run 38 in the summer and 40 in the winter
Posted: 01:19 pm Dec 15 2011
by ihatefalling
OK....thanks for the feedback guys.
Guess I'm not used to my bike hitting so hard so I was worried about it being too lean.
Posted: 03:15 pm Dec 15 2011
by Slick_Nick
ihatefalling wrote:OK....thanks for the feedback guys.
Guess I'm not used to my bike hitting so hard so I was worried about it being too lean.
You'll know if the pilot is too lean. Anything 1/4 throttle and below it will bog out. Honestly, try a 40 in there and see if it's any "crisper."
Posted: 07:31 pm Dec 15 2011
by ihatefalling
Sure can.
Am I crazy or do you HAVE to take the bowl off to get to the PJ ?
Posted: 10:53 pm Dec 15 2011
by Slick_Nick
ihatefalling wrote:Sure can.
Am I crazy or do you HAVE to take the bowl off to get to the PJ ?
Main you can do through the drain hole, PJ needs to have the bowl come off.
Posted: 10:59 pm Dec 15 2011
by ihatefalling
cool.....thx
Posted: 11:16 am Dec 16 2011
by fuzzy
The bigger bore lends itself to smaller (than what you see as 200 jetting) pilot sometimes...esp if this is the stock 33mm.
Posted: 05:52 am Dec 18 2011
by Mr. Wibbens
I run a 38 in my 200